1 /*
   2  * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 /**
  26  * @test
  27  * @bug 8031320
  28  * @summary Verify that rtm locking is used for inflated locks.
  29  * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary
  30  * @build TestUseRTMForInflatedLocks
  31  * @run main/othervm/bootclasspath -XX:+UnlockDiagnosticVMOptions
  32  *                   -XX:+WhiteBoxAPI TestUseRTMForInflatedLocks
  33  */
  34 
  35 import java.util.List;
  36 
  37 import com.oracle.java.testlibrary.*;
  38 import com.oracle.java.testlibrary.cli.CommandLineOptionTest;
  39 import com.oracle.java.testlibrary.cli.predicate.AndPredicate;
  40 import rtm.*;
  41 import rtm.predicate.SupportedCPU;
  42 import rtm.predicate.SupportedVM;
  43 
  44 /**
  45  * Test verifies that RTM-based lock elision could be used for inflated locks
  46  * by calling compiled method that use RTM-based lock elision and using
  47  * manually inflated lock.
  48  * Compiled method invoked {@code AbortProvoker.DEFAULT_ITERATIONS} times,
  49  * so total locks count should be the same.
  50  * This test could also be affected by retriable aborts, so -XX:RTMRetryCount=0
  51  * is used. For more information abort that issue see
  52  * {@link TestUseRTMAfterLockInflation}.
  53  */
  54 public class TestUseRTMForInflatedLocks extends CommandLineOptionTest {
  55     private TestUseRTMForInflatedLocks() {
  56         super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
  57     }
  58 
  59     @Override
  60     protected void runTestCases() throws Throwable {
  61         AbortProvoker provoker = AbortType.XABORT.provoker();
  62         RTMLockingStatistics lock;
  63 
  64         OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
  65                 provoker,
  66                 "-XX:-UseRTMForStackLocks",
  67                 "-XX:RTMTotalCountIncrRate=1",
  68                 "-XX:RTMRetryCount=0",
  69                 "-XX:+PrintPreciseRTMLockingStatistics",
  70                 AbortProvoker.class.getName(),
  71                 AbortType.XABORT.toString());
  72 
  73         outputAnalyzer.shouldHaveExitValue(0);
  74 
  75         List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
  76                 provoker.getMethodWithLockName(), outputAnalyzer.getOutput());
  77 
  78         Asserts.assertEQ(statistics.size(), 1,
  79                 "VM output should contain exactly one rtm locking statistics "
  80                 + "entry for method " + provoker.getMethodWithLockName());
  81 
  82         lock = statistics.get(0);
  83         Asserts.assertEQ(lock.getTotalLocks(), AbortProvoker.DEFAULT_ITERATIONS,
  84                 "Total lock count should be greater or equal to "
  85                 + AbortProvoker.DEFAULT_ITERATIONS);
  86     }
  87 
  88     public static void main(String args[]) throws Throwable {
  89         new TestUseRTMForInflatedLocks().test();
  90     }
  91 }